Latex Shrinkage ? (new Member Introduction)

[the green ghoul ●]

Depends on the stone used too. I use #1 pottery plaster which is said to expand and contract. I get larger castings from Pottery then ultra cal 30 which is very dense and doesn't expand or contract .about 10 to 15% is right. if pulling a mask form a 2 piece mold for limited production to fit 23 1/2 head it would need to be around 25 to 26 "